Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
hieu cua » hieu qua, dieu cua, bieu cua
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, ban hanh, dao hanh
va danh » va dinh, va dan, dia danh
cac xuc » cam xuc, cac nuoc, chat xuc
nang ma » tang ma, sang ma, nang cao
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
ca cuu » cap cuu, cua cuu, ca cua
tu sai » tu bai, tu san, tu cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ma hoi. hieu cua cac xuc ((va danh) or (((va hanh) OR (va thanh)))) ca cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ma hoi. hieu cua cac xuc ((va danh) OR (((va hanh) OR (va thanh)))) ca cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang ma hoi. hieu cua cac xuc ((va danh) or (((va hanh) OR (va thanh)))) ca cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ma hoi. hieu cua cac xuc ((va danh) or (((va hanh) OR (va thanh)))) ca cuu tre*.